User Manual

9
Adjusting the gain
The gain control is a rotary switch with 12 positions. The lowest position is a 6dB pad and the mic signal will be
attenuated by 6 dB at this setting. Each clockwise step of the control increases the mic pre gain by 6 dB, up to a
maximum of 60 dB.
The nominal output level of the Red 1 500 Series module is +4 dBu when the meter indicates 0 VU. The meter may be
recalibrated so that 0 VU = +10 dBu by setting the slide switch at the rear of the module to its up position. In this case,
the meter will now under-read compared to the down setting; the output signal level will be 6 dB higher for the same
meter indication. Please note that the signal levels and corresponding meter readings referenced here are measured
with sinusoidal test signals. Depending on the source material the peak level of the same signal, as displayed in a DAW
for example, could be significantly different. This is usual behaviour for an average level responding VU meter.
Stereo recording
Red 1 500 Series modules are particularly suitable for stereo recording because of the very accurate gain matching
between modules, and hence stereo channels.
When recording with a matched pair of microphones, or a dedicated stereo microphone, use two Red 1 500 Series
modules and set the gain controls on each to the same position.